Physics
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990angeo...8..531m&link_type=abstract
Annales Geophysicae (ISSN 0992-7689), vol. 8, July-Aug. 1990, p. 531-540.
Physics
2
Planetary Waves, Solar Oscillations, Solar Terrestrial Interactions, Three Dimensional Models, Computerized Simulation, Equatorial Atmosphere, Stratosphere Radiation
Scientific paper
A qualitative analysis of the initial zonal conditions in terms of quasi-geostrophic refractive index can provide a fairly good understanding of the effect of the equatorial QBO in the stratosphere before a sudden warming. The prewarming evolution of the stratosphere has been simulated with a global 3-D numerical model in which several patterns of stratospheric equatorial winds have been injected. For each case of QBO, two different runs were performed with wavenumber 1 tropospheric perturbations of 200 and 300 gpm of the geopotential heights at 60 deg N at the lower level and referred to as F200 and F300, respectively. Special emphasis was given to such pre-warming conditions as the effect of the QBO on the quasi-geostrophic refractive index and the consequences for the propagation of planetary waves. The results of the sumulations were compared with those of previous experimental and theoretical research.
Hauchecorne Alain
Maillard Alexandre
Rose Klaus
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